Sayyiduna Ibn Abbas (may Allah be pleased with them both) said: When Hamzah bin Abd al-Muttalib and Hanzalah bin al-Rahib (may Allah be pleased with them both) were martyred while both were in a state of major ritual impurity (janabah), the Messenger of Allah (peace and blessings be upon him) said: "I saw the angels washing them both."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 12042